Nut-making machine



(No Model.) 2 Sheets-Sheet 1.

J. H.' BURDIGK. NUT MAKING MAGHINE.

No. 460,553. Patented Oct. 6.1891.

'v v x MW@ 1 we mams Perins ou.. Fumo-WH0., msnmman u c (No Model.) -zfsne'ets-sheet J.v H. BURDIGK. NUT MAKING MACHINE'.

No. 460,553. Pgten'ed oct.. 6, '1891.

UNITED STATES PATENT OFFICE.

JUSTIN II. BURDICK, OF MILTON, ASSIGNOR TO THE ELASTIO NUT COMPANY, OF MILVAUKEE, VISCONSIN.

NUT-MAKING MACHINE.

SPECIFICATION forming part of Letters Patent No. 460,553, dated October 6, 1891.

Application filed .Tuly 15, 1889. Serial No. 317.589. (No model.)

To all whom t may concern:

Be it known that. I, JUSTIN H. BURDICK, of Milton, in the county of Rock, and in the State of Visconsin, have invented certain new and useful Improvementsin Nut-Making Machines; and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to nut-making ma- [o chines; and it consists in certain peculiarities of construction, as will be fully set forth hereinafter and subsequently claimed.

In the drawings, Figure l is a vertical longitudinal section through the operative parts I5 of my present machine on the line I l of Fig. 2. Fig. 2 is a plan viewof said machine with portions removed or broken away to illustrate the construction beneath. Fig. 3 is a side elevation of said machine, also partly zo broken away. vFig. 4 is an enlarged detail view of part of the die-disk and attachments. Fig. 5 is a detail front elevation of a portion of the die-disk and feed-spout. Fig. 6 is a detail sectional view on the line 6 6 of Fig. 4..

Fig. 7 is a detail sectional view on the line 7 7 of Fig. at. Fig. S is a detail perspective view of the end of the crowner, and Fig. 9 is a detail partly sectional view of the ratchetgroove.

3o A is the supporting-frame of my machine, and B is the solid bed-plate resting thereon, the latter having two openings a and l) of the outlines best shown in Fig. 2.

Extending transversely across the rear end of the bed-plate is a shaft C, resting in transverse recesses on each side of the opening a, which recesses are preferably lined with Babbitt metah) and over these parts of the shaft are the boxes c c, duly bolted to the bed- 4o plate.

d, to said shaft, and having peripheral edge flanges e c, which receive between them the eccentric-strap E, formed in two parts and bolted together, as shown, the forward part.

having an interiorly screw-threaded boss F, which receives a differential nut G, having exterior screw-threads corresponding to those of the boss F, and a socket or bore having screw-threads cut in opposition to the said eX- 5o terior threads for the reception of the screwthreaded rear end `h of the connecting-rod H,

D is an eccentric keyed, as shown at the nut G having a polyonal-faced fiange g for convenience in adjusting the same.

The forward end of the connectingrod H is pivoted to the rear end of the crowner-stem I, as by a tongue f on one part and cheekpieces fi fi on the other part, and pivot j, as shown. The front end of the crowner-stem carries a crowner J, which may be either solid with the stem, as shown, or made separate 6o therefrom and secured thereto, as preferred. The crowner and its stem are provided with a central bore K, extending back a short distance and thence extended down through the lower side of the crowner-stem,while the face 6 5 of the said crowner has a shape corresponding to that to be given the crown of the nut, as indicated by the dished or beveled annular depression 7n.

The front portion of the bed-plate B is cen- 7o trally cut away on the upper side to receive the revolving die-disk L and its central pivot M, the latter being pointed at its base and stepped on a pillow-block m, there being an opening m extending through'said pillow- 75 block and the bottom of the bed-plate B beneath.

The'die-disli L herein illustrated revolves with its pivot M, and is shown provided with four inandrels N N, though the number, more 8o or less, is immaterial, there being for each mandrel an ejector-sleeve N', covering the outer end of said mandrel, the outer end of the sleeve terminating in a peripheral ange n', forming an ejector proper, polygonal-faced 8 5 in the illustration given and corresponding to the shape of the die and nut. The rear end of this sleeve passes through a vertical guide-arm N2, having rollers n2 at each end, which project through vertical openings n in 9c the die-disk, and whose rollers 'n2 bear against the upper and lower segmental guides N3 N, the latter projecting from a hub or boss n4, surrounding the`pivot M and forming a part of the bed-plate B, (the said hub forming one wall of the annular groove B, of a width about double the diameter of the rollers n.2 located therein,) and the formerdepending from the rear end of a bent arm n3, rising from its anged base N5 on the front of the bed-plate Ico B, to which said hase N5 is secured, as by bolts n n, the adjacent surfaces of the base N5, and bed-plate B being shouldered or offset, as shown in4 Fig. l, for greater security, and the said arm la* being perforated to form the upper bearing of the described pivot M. The described sleeve N isheld to its arm N2 by an annular fiange or collar n on one side of the arm and a spring-key NG on the other side thereof, and the rear ends of the mandrels N pass through horizontal perforations in the die-disk L and bear against the pivot M, and are held in place by vertical pins or keys nl, as best shown in Fig. C.'

The die-disk L is mortised at intervals along its periphery in line with Ithe described lnandrels for the reception of the dies, each made in two parts P P, that have a central opening whenbrought together to place within the described mortises, and secured by the plates p @fastened to said die-disk, as by screws 1J p', as best shown in Fig. 5, and this die-opening tapers from its outer toward its inner end, as shown clearly in Figs. ai and 6, the said opening being of whatever coniiguration is desired, that shown in the present drawings being hexagonal.

O is a curved feed-spout extending down over the forward part of the machine to a supporting-arm Q, whose upper end is of a height and a shape (as hexagonal) adapted to hold the nut-blank, hereinafter described, squarely before the die-opening, and which arm is secured by bolts q (l to the bed-plate B, (against the front wall of the described slot 13,) the said spout C) being partly open at the rear when it has only the int-urned flanges o o terminating (together with the front wall of said spout) above the line of the crowner .T and the side walls of the said spout continuing down and being secured to the arm Q, as by bolts o' o', as shown.

R represents a ratchet-groove annulus having lugs r, by means of which it is secured (as by bolts fr) to the top of the die-disk L, and R represents the said ratchet-groove formed in the upper face of the said annulus R, having a succession of vertical walls r2 and inclines r3, as best shown in Fig. 9.

S is a guide-block secured to 011e side of the bed-plate B and havin g a longitudinal dovetaled groove s in its upper face, which receives the corresponding dovetailed part of a slide-block S, and to a pin s on this slideblock there is pivoted one end of a pawl-arm S2, whose other end bears a depending pin s2, engaging with the hereinbefore described ratchet-groove R', the pawl-arm S2 having a rocking bearing on the first-named pin s (as shown at s2 in Fig. 3) to allow of the rise and fall of the other end of said pawl-arm. The said slide-block S has another pin t, by which it is connected by pitman T to a wrist-pin t on the gear-wheel'U, mounted on the adjacent end of the shaft C. This gear-wheel U meshes with a pinion V on a shaft lV, journaled in boxes n on the rear end of the supportingframe A, and the other end of this shaft lV carries a balance-wheel X and belt-pulley Y,

the latterbeing for the reception of the powerbelt Z.

The operation of my machine will be understood from the foregoing description of its -eonstruction, taken in connection with the drawings.

My present machine is one adapted to make a nut from a nut-blank or ring of metal, and in Fig. 5 I show at Z a nut-blank, which, in this instance, consists of a strip of metal previously bent into a ring with an approximately hexagonal periphery; but it will be understood that the shape of the periphery of the nut-blank, or the manner of forming the same prior toits introduction into this machine is wholly material. The nut-blank is fed to the spout O, and slides down within the same, resting on the upper end of the arm Q, directly in front of the die-opening, and as the shaft C revolves the eccentric thereon forces the crowner-stem forward and the crowner drives the nut-blank into the dieopening, upsetting tlie metal of the blank and filling out the corners or angles true to the die, and at the same time forming the crown and butt upon the opposite ends of the nut, which is now a complete blank nut. which, as stated, is here shown with a hexagonal periphery, butwhich may of course be of any configuration desired, that depending solely upon the particular die employed. As the shaft C is in continuous revolution and the feeding of the nut blanks likewise continuous, the crowner will begin to withdraw (consequent upon the eccentric on said shaft) the moment its forward stroke has been given, and coincidently with said withdrawal the gear-wheel U on said shaft and wrist-pin t on said gearwheel will draw on the pitman T, which latter will retract the slide-block S' on its guide S, and thereby pull on the pawl-arm S2, the pin s2 at the free end of said arm moving up over an incline r2 and engaging with a wall r2 of the ratchet-groove R', (the described rocking-bearing s2 permitting the necessary rise and fall of the pawl-arm S2,) and thereby causing a quarter-revolution of the die-disk L (in the arrangment shown) at each revolution of the shaft C, and thereby presenting another die-opening in front of the crowner, which is now in position to operate on the next nut-blank just dropped down to place, while the nut just completed is ejected from its die by reason of the described segmental guides N3 N, against which bear the rollers n2 n2 of the vertical guide-arm N2, secured to the sleeve N of the ejector n', and thereby force said ejector outward to the circumferential line ot' the die-disk in the described quarter revolution thereof, and eject the n ewly-made nut Z2, which drops down through the slot b or through some part of its extension 1)', as shown in Fig. 2. These blank nuts may, of course, be tapped to any pitch desired, but this forms no part of my present invention.

The bore l in the crowner and stem, which TOO IIO

is for the reception of the mandrels N, is extended downward, as shown at K', .for the escape of dirt, scale, or other foreign matter, and the opening m beneath the pivot M is for the escape of spent grease arising from the necessary lubrication of the pivot-bearing.

The described construction of the differential connection between the eccentric-strap E and connecting-rod H enables the limit of forward movement of the crowner to be adj usted to a nicety.

The object of making the dic-opening tapering from its outer to its inner end is to facilitate the entrance of the nut-blank therein, as well as the ejection of the completed nut therefrom.

The outer end of each mandrel is slightly tapered for a length somewhat greater than the depth of the nut, as shown in Figs. l and 4, to enable the nut to be the more readily stripped therefrom when being ejected.

A great advantage of my rotating multiple disk lies in the fact that the time required to bring a die and mandrel again into use after the ejection of a nut, although brief, is sulficient to enable the said parts to become cool, and this permits a continuous rapid use of my device, impracticable with a stationary single dieiand mandrel.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a nut-making machine, the combination, with a suitable supporting-frame and a revolving shaft j ournaled therein, of an eccentric secured to said shaft and provided with an eccentric-strap having an interiorly screwthreaded boss, a differential nut screwed thereto, a connecting-rod secured to said nut, a crowner-stem pivoted to said connectingrod and terminating at itsv free end in a crowner, and a die located in line with said crowner, substantially as set forth.

2. In a nut-making machine, the combination, with a suitable supporting-frame and a revolving shaft journaled therein,of an eccentric secured to said shaft and provided with an eccentric-strap having an interiorly screwthreaded boss, a differential nut screwed thereto, a connecting-rod secured to said nut, a crowner-stem pivoted to said connectingrod and terminating at its free end in a crowner provided with a central longitudinal bore, a die located in line with said crowner and having a central opening also in line with that in said crowner, and a mandrel projecting through said central opening in the die and adapted to be received in said opening in the crowner, substantially as set forth.

3. In a nut-making machine, the combination, with a suitable supporting-frame and a revolving shaft journaled therein and provided with an eccentric, of a crowner-stem carrying a crowner and connected to said eccentric,a rotating multiple-die disk whose dieopenings are adapted to be brought successivcly 4in line with said crowner, a ratchetgroove ann-ulus secured to the top of said diedisk, a guide-block secured to the frame, a wheel on the said revolving shaft carrying a wrist-pin, a slide-block moving on said guideblock, a pawl-arm connected to said slideblock and engaging with said ratchet-groove, and a pitman connecting said slide-block with the wrist-pin on said Wheel, substantially as set forth.

4. In a nut-making machine, the combination-` with a suitable supporting-frame and a revolving shaft journaled therein and provided with an eccentric, of a crowner-stem connected to said eccentric and terminating at its free end in a crowner provided with a central longitudinal bore, a rotating multiple- 'die disk having die-openings and dies with 'tion, with the bed-plate provided with a central opening having an annular groove and a segmental guide at its base, of a rearwardlybent arm projecting over said opening and having a segmental guide depending from its rear end, a vertical pivot stepped in said bedplate and having its upper bearing in said bent arm, a multiple-die disk secured to said vertical pivot and having die-openings and dies around its periphery and vertical openings in line therewith and communicating with the said annular groove and by horizontal openings with the said die-openings, mandrels extending through the horizontal openings and die-openings, sleeves on the said mandrels terminating at their outer ends with peripheral ejecting-flanges and having vertical guide-arms secured to their rear ends, and rollers on the ends of said vertical guidearms adapted for contact with the said upper and lower segmental guides, substantially as set forth.

6. In a nut-making machine, the combination, with the die having a cent-ral opening, of a mandrel projecting therethrough and tapered at its outery end for a length somewhat greater than the depth of the nut, substantially as and for the purpose set forth.

7. In a nut-making machine, the combination of a mandrel with atsleeve covering and moving upon the outer part thereof and terminating in a peripheral ejector-flange, substantially as and for the purpose set forth.

8. In a nut-making machine, the combination, with the die having' a central opening IOO IIO

tapering from its outer to its inner end, of a mandrel projecting therethrough and tapered at its outer end for a length somewhat greater than the depth 0f the nut, substantially as and for the purpose set forth.

9. In a nut-making machine, the combination, with the die having a central opening tapering from its outer to its inner end, of a mandrel projecting therethrough, and a sleeve covering and moving upon the outer part thereof and terminating in a peripheral ej eetor-ilan ge, substantially as an d for the purpose set forth.

I0. In anut-making machine, the combination, with the die having a central opening tapering from its outer to its inner end, of a mandrel proj eeting therethrough and tapered at its outer end for a length somewhat greater than the depth of the nut, and a sleeve covering and moving upon the outer part of said mandrel and terminating in a peripheral ejector-flange, substantially as and for the purpose set forth.

ll. In anutmaking machine, the combina tion, with a rotating multiple-die disk, of a movable crowner having a central longitudinal here located in the line of the die-openings in said disk, and a series of mandrels, each projecting through one of the die-openings and adapted to be successively received -a rotary multiple-die disk located in said recess and having die-openings and dies in its periphery, a feed-spout secured te the wall of the said opening and cut away in line with the said dieopenings, and a horizontallymoving crowner adapted to pass through said 'cut-away part of the feed-spout and enter the said die-openings, substantially as set forth.

In testimony that I claim the foregoing I have hereunto set my hand, at Milwaukee, in the county of Milwaukee and State ol Wisconsin, in the presence of two witnesses.

JUSTIN ll. BURDICK.

Witnesses:

ll. G. UNDEIm'ooD, WM. KLUG. 

